Last month one of these exotic organisms, known as the Sabia virus, escaped from a high-security laboratory at Yale University.

Invasive species does not include domestic livestock, intentionally planted agronomic crops, or non-harmful exotic organisms" (Revised Code of Washington 79A.25.310).

And exotic organisms from the animal kingdom, like the gypsy moth caterpillar, leave their own marks on the forests.

You believe the Gordons took some very exotic and deadly organisms, and perhaps sold them to ... well, let's say a foreign power.

The muck is the perfect habitat for unusual, exotic and juvenile organisms that make their homes in the sediment and "trash" that compose a muck dive.

Certain exotic organisms do not seem to be subject to aging and can live indefinitely.

As a major commercial hub, the New York City region is particularly susceptible to introductions of exotic organisms, including human pathogens.

Any by inadvertently carrying exotic organisms back to Earth on our spacecraft, we risk the release of biohazardous materials into our own ecosystem.

The exotic organisms may be predators, parasites, or may simply outcompete indigenous species for nutrients, water and light.

Because asphalt attracts exotic organisms as it decays, all the old paths are being replaced with high-tech walkways, and lower-wattage lights will replace the bright bulbs that encourage moss and fungus growth.